"I've done a practice lap of Knockhill in a different car, as I think they wanted to make sure I wasn't completely useless behind the wheel before they put me in a £70,000 Ferrari 360 Modena," said Ben.

"That was the first time I had driven since I lost my sight, and it was surprisingly easy. I have to concentrate on the instructions, but things like changing the gears still come naturally, so I've not lost any of the skills involved."

Knockhill instructor Alan Brunton will guide Ben by giving directions based on a clock-face.

"It will certainly be one of the most memorable weekends of my life," Shaw said.